Improvement in tools tor making slides for extension-tables



waited giant @tutti Chillin.

SAMUEL J. MOOEE 'AND GEORGE A. BECKMAN, OE .OenENsBUEc, NEW

YORK.'

Letters PatentNo. 12,850, dated May l0, 1,870.

IMPROVEMENT IN TOOLS FOR MAKING- 'SLIDES FOR EXTENSION-TABLES- The Schedule referred to in these Letters Patent and making part of the same.

To all lwhom. it may concern:

Beit known that we, SAMUEL J. MOORE and GEORGE A. BUCKMAN, of Ogdcnsburg, in the county of St. Lawrence and State ot' New York, haveinveuted a new and useful Improvement in Forming Extension-Table Slides; and We do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in thc art to make and use the same, reference being had to the accompanying draw* l ings forming part of this specification, in which- Figures 1, 2, and 3 are detail sectional views of portions oi' our improvedmachine, taken through t-he lines x as, y y, and z of figs. 4, 5, and 6, respectively.

Figures 4, 5, and 6 are detail top views of portions of the same.

Figure 7 is a perspective view o fa portion of our improved slide.

Figure 8 is an end view of the same.

Similar letters of reference indicate corresponding parts'.

VMy invention-relates to` extension-table slides, and consists in an improved article, as well as in improved machinery for grooving them, as will be more particularly speciIie-d hereafter. t

A, B, and C are the'cutter-heads, to which the cutters D E F are respectively attached, in the ordinary manner.

The cutter-heads A .B- C may be vertical or horizontal, are driven in the ordinary manner, and may be attached to the same table or to separate tables, as may be desired or convenient.-

G and H are the gauges, which are beveled'in two.

directions, and are securely and detaohably .attached to the table or tables with which the cutter-heads are connected. This construction enables the critters and gauges to be attached to an ordinary machine, so that it'may not be necessary to procure entire new machinery.

'The slides I to be groovcd are first passed through lthe gauge G, where they are operated upon. by the in g. 2. y l rection through the gauge H, `where they are operated upon bythe cutters E, which cut the dovetailed partV cutters I), which cut the square part ot' ,one groove and the dovetailed part of the other groove, as shown The slides I are then run in the other di The cutters D and E are so formed, that, while their A projecting cutting-edges are Operating successively to form the two grooves, the cutting-edge, formed upon the body of the cutters between said projecting cutting-edges, cuts do'wn the tongue, between said grooves to the proper height, as shown in ig. 2.

J is the tongue, which is so formed as to fit into the grooves in the adjacent sides of the slides I, as shown in gs. 7 and 8. To do' this, the sides of the tongue J are rst grooved or plowed with an ordinary groovingmachine. The tongue J is then put upon a tongued gauge, K, where it is operated upon by the angular cut-ters F, as shown in iig. 3, which cut angular grooves in the side edges of the said tongue, into which -t the dovetailed slides of thedovetailed part of the grooves in the sides I, as shown in iigs. 7, and 8. This construction gives greaterstrength to the slides, and makes them morednrablc by giving them a greater wearing surface.

Having thus described our invention,

We claim as new and desire to secure by Letters Patent- 1. The rotating tools D Fand gniders G K, sever? Witnesses:

DELOS MGCURDY. R. R. NEWTON. 

